Type-writing machine.



G. E. SHEPARD.

TYPE WRITING MAUHINE.

Arrmonlon FILED Nov.1o, 1910.

Patented Jan. 9, 1912.

2 SHEETS-SHEET 1.

@y MM HIEATTURNEY 2 sums-sham 2.

Patented Ja.11.9, 1912.

Sy ir G. H. SHEPARD. TYPE WRITING MACHINE. APPLICATION FILED Nov. 1o.19mv am mw N N E m v .gm W -.8 A Jg .1.1 E nu@ a W ,um N m j@ nw 2 W mmn --.fwn NP.. 2 Q

l I I WITNESEEJ 'same general objects in view as the cony showing adifferent Y., ASSIGNOR TO UNION TYPEWRITER COM- A CORPGRATION OF NEWYORK.

cHAnLns H. SHEPAND, or Nnw YORK, N. PANY, or iLioN, NEW Yoan,

TYPE-WRITING MACHINE. i

Specification of Letters Patent. Paten ted Jan E), 1912.

10, 1910. Serial No. 591,680.

Application Med November To all whom it may concern: I have shown myinvention embodied in Be it known that I, CHARLES II. SHEPARD. thepresent instance in a No. 1() Remington citizen of the United States,and resident of y machine although only a conventional rcpthe. boroughof Manhattan. city of New i resentatioii of the carriage appears in theYork, in the county of New .fork and State drawings. It should beunderstood. howof New York, have invented certain new ever, that theinvention may be embodied and useful Improvements in Type-VVriting l invarious styles of typewriting machines. Machines, of which the followingis a speci- The frame of the machine comprises a base l, corner posts Qand a top plate 3.

fication.

My invention relates to typewriting ma- Key levers 4 are fulcriimed attheir rear ends on a fulcriiin plate 5. and each key chines and moreparticularly to carriage lever is provided with arfinger key 6. A

feed or escapement mechanism.

The present invention is in the nature of i returning spring i isconnected at one end to each key lever 4. and at its opposite end an`improvement on the construction disto a connecting device S secured tothe base closed in a companion application filed by i me of even dateherewith and bearing Serial l of the machine. Each key lever isconnected to an upwardly extending link 9,

which has its upper end connected to a sublever 10, pivoted at 11 to ahanger 12. The rear end of each sub-lever is connected to a link 13.which has its rear end connected to erated, eflicient and reliableescapement, and a type bar 14. Each type bar is pivoted at one in whichthe wear on the escapement 15, C0 a hanger l@ SGCUIQCI t0 il WPC hill"devices is greatly reduced. l segment 17. The various type bars are seg-The above and other advantages of the mentally arranged to strikeupwardly and structure disclosed in the companion application are alsoinherent in the construction of the present invention and in additionthe present invention enables the parts to be regulated at will toeffect either ordinary or reverse feed as may be desired.

To the above and other ends which will hereinafter appear, my inventionconsists in the features of construction, arrangements of parts andcombinations of devices to be hereinafter described and particularlypointed out in the appended claims.

In the accompanying drawings wherein like reference characters designatecorresponding parts in the various views, Figure 1 is a fragmentary,central, vertical seci tional, view of one form of typewriting machineembodying my invention. Fig. 2 is by reason of the fact that the drinnis lol cated on this side of the plane on which the a fragmentary, sideelevation, with parts in l section, showing a portion of the escape- 1section is taken in Fig. 1. Rearwardly exinent mechanism. Fig. 3 is alike view of y tending arms 24 are pivoted at Q5 to the the same.showing the parts differently discarriage, near the ends thereof. Theseposed. Fig. 4 is a detail fragmentary rear arms are connected to a feedrack 26. which elevation showing the escapement wheel and meshes with afeed pinion 27. The feed feed dog. Fig. 5 is a fragmentary sideelepinion is fixed on the forward end of a shaft vation of parts of theescapement mechal 28, which turns in a bearing 29 secured to nismcorresponding to Figs. 2 and 3 but l the top plate of the machine. Therear end disposition of the parts l of the shaft extends beyond thebearing and iihas a circular feed rack or an escapement The presentinvention has some of the struction disclosed in said companionapplication, namely; to provide an easily oprearwardly against the frontface of a cylindrical platen 18.

The platen is carried by a. carriage 19. the platen and carriage beingrepresented in the present instance in a conventional manner. Front andrear cross bars Q0 of the carriage are oppositely lqrooved to forniiguides which cooperate with anti-friction balls or rollers 21, whichare likewise received in oppositely grooved fixed guide rails 22.secured to lugs 23 which project upwardly from the top .plate of themachine. The carriage is thus supported to travel from side to side ofthe machine over i the top plate being propelled in its movement fromright to left by the usual spring drum a indicated in dotted lines inFig. 1

from those represented in Figs. 2 and' 3,

wheel connected therewith. In the present instance the escapement wheelis a double wheel, comprising two escapement wheels 30 and 31 spacedapart by an intermediate disk 32 and secured together by screws 33.

The escapement wheel 30 has a hub 34, tapped to receive set screws 35,by which the double escapement wheel may be fixed to the shaft 28. Theteeth of the two escapement wheels 30 and 31 are arranged so that amovement of the double wheel from a tooth on one wheel, say, 30, to thenext tooth on the other escapement wheel 31, affords a full letter spacemovement of the carriage under the power applied to the carriage fromthe spring drum c. A dog rocker 36 has its rock shaft 37 pivoted at itsends on cone supporting members n`ot shown) which are held in place inlugs 38 by screws The lugs 38 extend rearwardly from a bracket plate 40which is secured to the bottom of the top plate 3. The dog rocker isslotted at its upper end, to receive a feed dog 41, pivoted in the slotin the dog rocker, as indicated at 42, so that the tail 43 of the dogbears against a portion of the dog rocker to limit the upward movementof the dog 41. A spring 44 is received in a recess in the dog rocker andbears at its upper end against the dog 41, to the right of its pivot asthe parts appear in Fig. 4, in order to normally maintain the dog in thcpath of teeth on the escapement wheel. This construction encbles areverse rotation of the escapement wheel to take place during themovement of the carriage from left to right. During such movement of theescapement wheel the rear sides of the teeth which are in the plane ofthe dog, bear upon and press it down against the pressure of the spring44; the dog thus being moved out of the path of the teeth to enable thewheel to rotate freely during the backward movement of the carriage. Ascrew stop 45 is received in a tapped opening in the upper arm of thedog rocker, and is adapted to bear at its forward end against anabutment 46 carried by the bracket plate 40. An arm 47 projectsforwardly from the dog rocker, and is tapped to receive a screw stop 48which extends at right angles to the screw stop 45 and is adapted tobear at its upper end against the abutment 46. These stops limit themovement of the rocker in opposite directions. The dog rocker isprovided with a. depending arm 49 which carries a laterally projectingpin or stud 50 which constitutes an engaging device. This stud extendsat ri ht angles to the length of the arm 49 an is preferablysubstantially triangular in cross section. This engaging device iscoperative with two actuating devices or pawls 51 and 52 which arepivoted at 53 near the opposite ends of an oscillatory device 54, whichis in the nature of a lever of the first order,

pivoted on a shouldered pivot screw 55 and limited in its movement inone direction by a stop 55a. The screw 55 is received at its threadedend in a ta pcd opening in a lug 56. This lug, as wel as the stop 55,constitutes parts of a bracket 57, which is secured at its lower end tothe base of the machine by screws 58. A light contractile spring 59 isconnected at its ends to pins 60, which project from the pawls 51 and52. The spring 59 is effective to draw the pawls by a light pressuretoward each other and toward the engaging device 50 on the dog rocker.Each of the pawls has a hook-like engaging portion which is adapted tocooperate with the engaging member 50 on the dog rocker. Thus, the pawl51 is recessed at 61, the recess conforming to the shape of the engagingmember 50 on two sides thereof, whereas the pawl 52 is recessed at 62 toen age the member 50 on the opposite side t ereof. The pawl 51 has acontact face 63, with which the contact faces 64 and 65, of the pawl 52,are adapted to coperate in a manner which will hereinafter more clearlyappear. The purpose of these engaging faces is to prevent one of thepawls rom engaging the member 50 when the other pawl is in engagementtherewith.

From the foregoing description it will be understood that a turninmovement of the lever 54 in either direction will cause the pawls 51 and52 to move in opposite directions as indicated by the arrows in thevarious views. The lever 54 is provided with an arm 66 which ispivotally connected with a lever 67 of the rst order, by a shoulderedscrew pivot 68. The lever 67 has a longitudinally extending slot 69midway in the len th thereof for the rece tion of a shouldereY screwpivot 70, which 1s received at its threaded end in a bracket arm 71which projects from the bracket 57. This slot 69 enables the lever toreceive a slight longitudinal movement on its pivot during the turningof the levers 67 and 54.

The forward end of the lever 67 is tapped to receive the threaded end ofa shouldered screw pivot 72, by which an actuating link 73 may beconnected to the forward end of the lever. The construction is such thatthe link 73 may be connected to the lever 67 at the forward end by thescrew 72 or may be connected to the lever at the opposite end by thescrew 68, for purposes which will hereinafter more clearly appear. Anupwardly extending bracket arm 74 projects from the bracket 57 and istapped to receive a screw 75. This screw is hollow and is adapted toreceive a ball 76 connected to one end of a contractile spring 77. Theopposite end of this spring may be connected to the lever 67 in theopening 78, on one side of the' pivot of said lever, or may be connetedat the other side of the pivot of said lever to a perforated ear siimedfor the purpose of the present 79, which projects from the arm 66 of thescription that the parts are at a state rest in the positions indicatedin Fig. 2.

lever 54; the last mentioned osition of the depression of a finger orprinting key spring being indicated in otted lines in Fig. 2. In thismanner-ther spring 77 may be connected to the parts at one side or theother of the fulcrum'of the lever 67 and the link 73, by which the partsare actuated, may also be connected to the lever 67 at one side or theother of its fulcrum. The link 73 is preferably provided with a turnbuckle 8O by which the link may be lengthened or shortened toaccommodate itself to its adjustment at either one side or the other ofthe fulcrum of the lever 67. The lower end of the link 73 is bifurcated,and a pin 81 extends across the opening formed by the bifurcation in thelever and is received in an upright slot 82 formed in a crank arm 83,which projects rearwardly from a rock shaft 84. This construction issuch as to enable the crank arm to move downwardly a short distancebefore the pin 81 reaches the bottom of the slot 82, and before motionis transmitted to the actuating link 7 3 and the parts controlledthereby. Rearwardly extending crank arms 85 project from the rock shaft84, near the ends thereof, and each arm is connected to a depending link86, connected at its lower end to a universal bar 87,' which extendsbeneath the system of key levers 4. A contractile spring 88 is connectedat one end 89 to the type bar segment and at its opposite end 90 to thecrank arm 83, in order to return the arm 83, rock shaft 84 and universalbar to normal posiis effected without transmitting movem connectionbetween arm. Then the bottoni of the pin 8l, the link thus pulling downlever ('17 and cruin. This effects a turning movement the 'forward endof 2 to that indicated in Fig.

assume at the termination of this first pression or down stroke of akey. During the movements of the parts described the paivls 5l intoopposite directions arrows in Fig. "2. pawls in this direction, and atthis time ineffective to transmit movement to tbe rocker; the paivlsfinally sitions shown in Fig. 5 of the down stroke. depressed printinglkey ating link 73 will move upwardly under force of the spring 77,movement will be transmitted to the le 54 to move the pawls sitionsindicated in Fig.

as indicated by at the termin-at 5, and in the dii this time iseffective to depress the universal bar 87, thus moving the crank arm 88down. The first part of the movement of the arm 83 ent to the link 78 bv reason of the lost motion said link and the crank the slot 82 reaches73 will be pulled down,

the

turning said levor on its fulthe lever 54 from the position shown inFig.

5, which represents the parts in the positions which they ust and willbc moved tlie The movement of said dog arriving at the poion thenpressure on the is released theV actuthe and an oscillatory 5l and 52from the potions of the arrows in said ligure, to the potion, whenpressure is released on a desitions indicated in Fig. 3,wliiclilatiertlg-ure, pressed finger key. The purpose of providrepresents thedisposition of the parts at the ing adjustable means, or means whereby aend of the first up stroke of the key. .is the pawls 5l and 52 move fromthe positions connection may be made between the link dicated in Fig. 5to those 7 3 and the parts with which it co-acts at different points,and of adjusting the lower end of the spring 77 to-one side or the otherof the fulcrum 70, is to regulate the escapement mechanism at will tofeed either ordinary or reverse, as may be desired. The point ofconnection of the link 73 to the forward end of the lever 67 isrepresented in full lines in the various views, as is the correspondingarrangement of the returning spring 77. When the link is connected withthe parts in this manner they are arranged for ordinary feed so that theletoif of the carriage takes place on the up stroke of the key.

The operation of the parts when set for ordinary feed will first bedescribed. While 'either of the positions of the dog rocker illustratedin Figs. l and 2 may be regarded as the normal position, it will beobserved that in both instances the position of the actuating deviceswhich control the dog rocker are the same, although the posi-` tionsthereof With reference to the engag-` 55 ing device 50 are altered. Itmay be asso as to aii'ord a seating of the pin 50 51 has an opportunityto engage pin in the manner described is effect 50 vent a downwardmovement of the pawl at this time. The movement of the pawl tive tobring the Contact faces b4 and 65, Said paivl, into position where theyadapted to cooperate with the Contact f 63, on the paivl 5l, to preventthis last in afford a free movement the pin as indicated in Fig. 8. 52moves in the direction of tlie arrow, fr the position shown in Fig. 5 tothat indica in Fig. 3, it engages ner described and shifts the cated inFig, 3.

lll-

indicated iii Fig. 3 as just described.` the paivls will be moved lllthe recess 62 in said pawl. before the pawl the said pin.

The en agement of tlie iawl with the ive to bring the bill of thehook-like engaging portion of the paivl 52 over the pin to preintoengagement ivitli the pin o() is also effecare ace

tioned pawl from engaging the pin and to of the paivl 51 past As thepawl om t e d the pin 50 in the inandog rocker from the position shownin Fig. 5, to that indi- This movement of the dog rocker is effected atthe up stroke of a key and under the stress of the spring 77; the clovvnstroke of the key having been effected without moving the dog rocker.

The movement of' the dog rocker just described carries the feed dog 41out of engagement with a tooth 011 the escapement wheel 30 and moves itinto the path of the next oncoming tooth on the escapement wheel 31. Ashereinbefore indicated, this movement of the dog transversely of theplanes of' the escapement wheels, is effective to afi'ord a full letterspace movement of the carriage which, in the present instance, takesplace at the np stroke of' a key. This leaves the parts disposed asindicated in Figs. 1 and 3, and the next depression of a key moves theparts from the positions indicated in Fig. 3; the pawls 5l and 52traveling in the directions of the arrows indicated in said figure. Atthis time the movement of the pawls is ineffective to transmit movementto the dog rocker. iVhen, however, pressure is released on the depressedkey the paivl 51 is first brought into engagement with the pin 50 andthe bill of the hooklike engaging portion of said pawl engaging underthe pin. is effective to prevent the paivl from being lifted at thistime. This maintains the contact face 63 on the pawl 51 in a positionwhere it is adapted to coperate with the contact faces 64 and 65 on thepawl 32. As pressure is released on the finger key the pawls 5l and 52will move in opposite directfons from those indicated by the a1'- roivsin Fig. 2, and the effect of these 1novements of the pawls is to movethe dog rocker from the position shown in Fig. 3 to that indicated inFig. This last mentioned figure therefore represents the disposition ofthe parts at the termination of the second up stroke of the key.

The movement of the dog rocker just described. from the position shownin Fi 3 to that indicated in Fig. 2, causes the eed dog il to be movedrearwardly out of en gagement with a tooth on the escapeinent wheel 31and into the path of the next oncoming tooth on the escapement Wheel 30.This movement of the feed dog transversely of' the wheels is effectiveto produce a full letter space movement of the carriage as previouslypointed ont. It will be understood that in each instance the movement ofthe dog rocker is eiected by the pressure of the spring 77 which returnsthe actuatin devices for the dog rockerLto normal pos1- tion. Thepressure of this spring may be varied by the adjusting device 7 5 torender said spring effective for this purpose.

It will be observed that the dog rocker itself is entirely free fromspring pressure and is adapted to remain in either of the back and forthpositions to which it may be moved by the actuating devices. If thebearings for the dog rocker do not provide sufficient frictionalresistance to maintain the dog rocker against accidental displacement ineither of' the back and forth positions to which it may be moved, anysuitable resisting means may be empioyed for this purpose. In thepresent instance I have illustrated a bearing roller 91, mounted on avertical pivot 92, 0n a bracket arm 93, which projects from the bracket57, hereinbefore referred to. The periphery ot' this roller 91 bearsagainst a Hat side of the depending arm :t9 of' the dog rocker, in itsback and forth movements, and tends to prevent an accidentaldisplacement of the dog rocker from the position to which it may bemoved by its actuating devices. At the same time the resistance offeredby the roller is slight and does not materially retard the dog rocker inthe movements transmitted thereto by the actuating devices and by thespring 77. The slot 69 in the lever 67, as hereinbefore pointed out,affords a slight longitudinal movement of the lever during the movementof the actuating devices in order to prevent the connections between thelevers 54 and 67 from jamming.

In order to set or regulate the parts to provide a reverse feed, or onewhich takes place at the down stroke instead of at the up stroke of a keit is merely necessary to disconnect the upper end of' the iink 73 fromthe front end of the lever 67, and to shift said link and connect it tothe parts by the screw 68, thereby adjusting the upper end of the linkfrom one side to the other of the fulcrum of the lever 67. The turnbuckle 80 may be adjusted in order to compensate for the variation inthe position of the link 73, with reference to its coperating actuatingdevices. Thus the parts of the actuating devices should be normallydisposed in the positions represented in Fi when they are set forreverse feed, and the turn buckle 80 may be used to aid in affording aproper positionin of the parts in the positions indicated. Te lower endof the spring 77 is also disconnected from the lever 67 at the point 78,and is connected at 79 to the opposite side of the fulcrurn of the lever67. The dog rocker being actuated at a depression of a key in thisinstance, it is unnecessary to employ the same amount of' force in thespring 77 that is required when the parts are set for ordinary feed. Itis merely necessary, when the parts are set for reverse feed, to employsufficient force in the spring 77 to restore the actuating devices tonormal position. The adjusting screw 75 may, if necessary, be turneddown so as to reduce the force applied by the spring 77 to the actuatingdevices. The parts being thus set for reverse feed a depression of afinger key is effective to pull down the link 73 from the position indireverse cated in dotted lines in Fig. 5, and this movement is effectiveto turn the lever 54 in a direction opposite to that in which it isturned when the link 7 3 Was connected to the forward end of the lever67. The effect of this downward movement of the link 7 3 is to move thepawls 51 and 52 in the directions indicated by the arrows in Fig. 5, andat this time the pawl 52 will be moved into engagement with the pin 50,to move the dog rocker from the position shown in Fig. 5 to thatindicated in Fig. 3, which latter figure represents the disposition ofthe parts at the termination of the first down stroke of a key, when theparts are set for reverse feed. As the dog rocker is moved positively atthis time by the down stroke of the key the feed dog is moved from oneescapement Wheel to the other in the manner described and the fullletter space movement of the carriage is effected. When pressure on thedepressed finger key is released the actuating devices will be restoredto normal position, such as is indicated in Fig. 5, Without transmittingmovement to the dog rocker. The next down stroke of a key is effectiveto move the pawls 51 and 59d from the positions shown in Fig. 5, to thepositions shown in Fig. 2. At this time the pawl 51 engages the pin 50,and the pawls moving from the Fig. 5 to the Fig. 2 positions in thedirections of the arrows in Fig. 5, will move the dog rocker from theposition shown in Fig. 3, to that represented in Fig. 2; the paWl 52 atthis time being maintained out of engagement with the pin 5() by thecooperation of the contact faces 63, 64 and 65. This last mentionedmovement of the dog rocker effects a fuil letter space movement of thecarriage. At the next up stroke of a key, the actuating devices areagain returned to the positions shown in Fig. 5, Without transmittingmovement to the dog rocker. The dog rocker at this time being in theposition indicated in Fig. 5, the operations described in connectionwith the first down stroke of the key will be repeated at the next keydepression.

It Will be observed that the pawls 51 and 52 move in opposite directionsat each up stroke and also at each down stroke of a key; that the pawlsare each operative to move the dog rocker in but one direction; that theparts may be regulated so as to feed at either the down stroke or at theup stroke of a key, to aord either ordinary or feed, as may be desired;that in either instance the dog rocker and feed dog receive a. movementin but one direction at each complete operation of a linger key; thatthe dog rocker is free to remain in either of the back and forthpositions to which it may be moved and has no returning spring; that themovement of the feed dog and rocker in but one direction at eachcomplete operation of the key reduces the Wear on the escapement devicesby one-half over the ordinary construction in which it is necessary tomove the dog rocker and feed dog back and forth at each complete.operation of a key; that the construction is such that it requires butlittle power to actuate the parts, thereby providing a light touch onthe finger keys; that when the parts are set for reverse feed the entiretrain of mechanism from the finger key to the feed dog is actuated by aositive pressure applied to the finger key, but that the actuatingdevices on the dog rocker are inoperative to move it during the upstroke of the key, so that any trembling of the keys at the last part ofthe down stroke cannot be transmitted to the dog rocker and thereforethere is no liability of the carriage skipping under the control of theescapement as is often the case in f reverse feed constructionsordinarily employed; and that the escapement is therefore effective andreliable, irrespective of the character of the operators touch.

I am aware that various modifications may be made Without departing fromthe spirit of my invention, and have illustrated a modified form ofconstruction embodying many of the advantages of the presentconstruction, and by which the parts may be regulated at will to effecteither ordinary or reverse feed of the escapement, in a companionapplication, Serial No. 591,681 filed by me of even date herewith.Certain of the claims herein cover broadly the modified form of theinvention embodied in said companion application; the claims in the saidcompanion application being restricted to features not herein shown.

My companion application, Serial No. 591,679 hereinbefore referred to,embodies generic claims covering the construction disclosed herein, theclaims in the present case being restricted to features not disclosed iusaid companion application.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a carriage; escapementmechanism therefor which includes two cooperative escapement members,one movable back and forth relatively to the other', finger keys andmeans controlled by said finger keys for controlling the operation ofthe escapement mechanism, said controlling means including means formoving the said movable escapement member alternately back and forth atsuccessive printing operations, each complete operation of a finger keymoving said movable member either back or forth; and means forregulating parts of the controlling means to feed ordinary or reverse ias may be desired.

2. ln a typevvriting machine, the combination of a carriage; escapementmechanism therefor comprising a dog member and a rack member, one ofsaid members being movable relatively to the other transversely of theplane of the rack member; printing keys; means controlled by saidprinting keys for moving said movable member back and forth in thedirection specified at successive printing operations, each completeoperation of a printing key moving said movable member either back orforth; and means for effecting a relative adjustment of the parts atwill to effect ordinary or reverse feed as may be desired.

3. In a typewriting machine, the combination of a carriage; escapementmechanism therefor comprising two coperative escapeinent members, onemovable back and forth relatively to the other; finger keys; meanscontrolled by said finger keys for moving the said movable escapementmember alternately' back and forth at successive printing operations,one key operation moving the movable member in one direction and thenext key operation moving the movable escapement member in the oppositedirection; and means for effecting a relative adjustment of the parts atwill to effect ordinary or reverse feed as may be desired. i

4. In a. typewriting machine, the combination of a carriage; escapementmechanism therefor comprising an escapement Wheel and a feed dog, asingle movement of the feed dog in one direction affording a completeletter space movement of the carriage; finger keys; means intermediatesaid finger keys and dogs for effecting a movelnent of' said feed dogalternately in one direction and then in the opposite direction atsuccessive operations of the keys, each complete operation of a keyeffecting a movement of the dog in but one direction; and. means foreffecting a relative adjustment of the parts at will to effect ordinaryor reverse feed may be desired.

5. In a typewriting machine, the combination of a carriage; escapementmechanism therefor comprising a feed rack and a dog, one of sa id feedrack and dog members being movable relatively to the other; finger keys;means intermediate said keys and said movable member for effecting amovement of said movable member in one direction only at each completeactuation of a key, successive operations of the keys eHecting amovement of' said movable member first in one direction and then in theopposite direction; and means for effecting a relative adjustmentbetween parts of said intermediate means to effect ordinary or reversefeed as may be desired.

(. In a typewriting machine, the combinai tion of a carriage; escapementmechanism therefor comprising two coperati ve escapement members, and arocker which carries one of said escapement members; finger of, toeffect reverse keys; means intermediate said finger keys and rocker formoving the rocker alternately first in one direction and then in theopposite direction at successive operations of said finger keys, acomplete operation of each finger key eecting a single movement of therocker in only one direction; and means for effecting a relativeadjustment between parts of said intermediate means to effect ordinaryor reverse feed as may be desired.

7. In a typevvriting machine, the combination of a carriage; escapementmechanism therefor comprising two coperative escapement members and arocker which carries one of said escapement members; finger keys; meansintermediate said finger keys and rocker for moving the rocker first inone direction at the operation of a key and then in the oppositedirection at the next operation of a key; and means for effecting arelative adjustment between parts of said intermediate means to effectordinary or reverse feed as may be desired.

8. In a typevvriting machine, the combination of a carriage; escapementmechanism therefor comprising two coperative escapement members and arocker which carries one of said escapement members; finger keys; meansintermediate said finger keys and rocker for moving the rocker first inone direction at the operation of a key and then in the oppositedirection at the next operation of' a key; and means for effecting arelative adjustment between parts of said intermediate means to effectan actuation of said rocker from said keys on the down stroke of thekeys or on the up stroke thereor ordinary feed as may be desired.

9. In a typewriting machine, the combination of a carriage; escapementmechanism comprising two coperating members; finger keys; meanscontrolled thereby for controlling one of said escapement members, saidcontrolling means comprising actuating devices movable in oppositedirections, and means by which one of said escapement members isactuated first by one and then by the other of said actuating devices atsuccessive key operations; and means for determining Whether saidactuating devices shall be operated on the down stroke or on the upstroke of the keys.

10. In a typewriting machine, the combination of a carriage; escapenientdevices; finger keys; means controlled thereby for controllingtheoperation of said escapement devices, said controlling meanscomprising actuating devices movable in opposite directions; and meanswhereby an actuation of certain of said escapement devices is effectedfirst by one and then by the other of said actuating devices atsuccessive key operations; and means for effecting a relafor effecting arelative adjustment between parts ordinary or reverse l feed at will.

l2. In a typewriting machine, the combi-l nation of a power drivencarriage; escapenient mechanism therefor comprising twoA cooperativeescapement members, one movable back and forth relatively to the otherand free to remain in either of the two back and forth positions towhich it may bel moved; finger keys; means controlled by said fingerkeys for controllingr the oper-4 ation of said escapement mechanism,saidl controlling means including means for moving said movableescapement member alterQ nately first to one of said positions and thento the other; and means for effecting a relative adjustment betweenparts of said key controlled controlling means to produce ordinary orreverse feed at will.

13. In a typewriting machine, the combi-V nation of a power drivenCarriage; escapement mechanism therefor comprising two coperativeescapement members one movable back and forth relatively to the otherand free to remain in either of the two back and forth positions towhich it may be moved; finger keys; means controlled by said finger keysfor moving said movable cscapenient member alternately first to one ofsaid positions and then to the other; and regulating means fordetermining whether said key controlled moving means shall be effectiveto move the movable escapement member on the down stroke or on the upstroke of a key.

14. In a typewriting machine, the combination of a power drivencarriage; escapement mechanism therefor comprising two cooperativeescapemeiit members one movable back and forth relatively to the otherand free to remain in either of the two back and forth positions towhich it may be moved, each of such movements of the movable member toeither of said positions affording a full letter space movement of thecarriage; finger keys; means controlled by said finger keys for movingsaid movable escapement member alternately first to one of saidpositions and then to the other; and

and firstV one and then the other of said actuating devices atsuccessive key operations; and means of said controlling means toproduce.

regulating means for determining whether said key controlled movingmeans shall be effective to move the movable escapement member on thedown stroke or on the up stroke of a key.

15,. In a typewriting machine; the combination of a carriage; escapementmechanism therefor comprising a rocker free from spring pressure andmovable back and forth and adapted to remain in either of the two backand forth positions to which it may be moved; finger keys; meanscontrolled by said finger keys for moving said rocker alternately backand forth first to one of said positions and then to the other atsuccessive key operations; and means for determining whether said rockershall be moved at the down stroke or at the up stroke of a key.

16. In a typewriting machine, the combination of a power drivencarriage; escapenieiit mechanism therefor; finger keys; means controlledby said finger keys for controlling the operation of said escapcmentmechanism; said controllingl means including two actuating devices whichare moved in opposite directions at each imiwemcnt of thc key in onedirection, to actuate a member of the escapement mechanism; means bywhich each of said actuating dev ices is effective to move a member ofthe cscapcment in one direction but is ineffective to move it in theopposite direction; and means for changing the relation of the parts of'said controlling means to feed ordinary or reverse as may be desired.

17. In a typewriting machine.J the combination of a power drivencarriage; escapement mechanism therefor; finger keys; means controlledby said finger keys for controlling a member of said escapcment meclia-105 nism, said controlling means comprising two actuating devices whichare moved in opposite directions at each movement of a key in onedirection, means by which each of said actuating devices is effective tomove 110 a member of the escapement in one direction but is ineffectiveto move it in the opposite direction; and means for effecting a changein the direction of the movement of parts of said controlling n'ieans toafford 115 either ordinary or reverse feed as may be desired.

18. In a typewriting machine, the combination of a power drivencarriage; escapement mechanism therefor comprising two 120 coperativemembers one of which is niovable back and forth relatively to the other;finger keys; spring returned means controlled by said keys for effectingsaid back and forth movements of said movable es- 125 capement member;and means for regulating said spring returned key controlled means tomove said movable escapement member either by the pressure applied tothe finger keys by the operator or by the 130 spring which restores saidkey controlled means to normal position.

19. In a typewriting machine, the combination of a power drivencarriage, escapement mechanism therefor comprising two cooperativemembers one of which is.movable back and forth relatively to the other;finger keys; spring returned means controlled by said keys for effectingsaid back and forth movements of said movable escapement member; andmeans for effectin a relative adjustment between parts of sai springreturned means so that a down pressure alone on said keys is effectiveto transmit said back and forth movements to the movable escapementmember or so that the movement of restoration of the spring returnedmeans alone is effective to transmit said back and forth movements asmay be desired.

Q0. In a typewriting machine, the combination of a power drivencarriage; escapement mechanism therefor comprising two coperativemembers one of which is movable back and forth relatively to the other;finger keys; spring returned means con` trolled by said keys foreffecting said back and forth movement of said movable escapementmember, said means including two oppositely disposed hooks, means formoving said hooks in opposite directions at each operation of a key, andmeans whereby said hooks are rendered alternately effective to move thesaid movable escapement member first in one direction and then in theother in the back and forth movements thereof; and means for changingthe relation of the lparts so that the hooks are rendered effective tomove the movable escapement member only on the down stroke of a key oronl on the up stroke of a key as may be desire 2l. ln a typewritingmachine, the combination of a power driven carriage; escapementmechanism therefor comprising two coperative members one of which ismovable hack and forth relatively to the other; finger keys; springreturned means controlled by said keys for controlling the operation ofsaid escapement mechanism, sa1d controlling means including twooppositely disposed hooks for effecting said back and forth movements ofsaid movable escapement member; means for moving said hooks in oppositedirections at each operation of a key, and means whereby said hooks arerendered alternately effective to move the said movable escapementmember first in one direction and then in the other in the back andforth movements thereof; and means which afford a setting of parts ofthe key controlled means to cause the escapement mechanism to feedordinary or reverse as may be desired.

2Q. In a typewriting machine, the combination of a power drivencarriage; escapement mechanism therefor comprising two cooperativemembers one movable back and forth relatively to the other; finger keys;and means controlled by said finger keys for moving said movableescapenient member forward at one key depression and back at the next,said means including an element which may be set to cause the movableescapement to be moved forward at one up stroke of the key and back atthe next instead of being moved alternately back and forth at successivekey depressions.

23. In a typewriting machine, the combination of a power drivencarriage; a feed rack; a feed dog; a dog rocker free from springpressure; printing keys; controlling means intermediate said printingkeys an said rocker, said controlling means moving the rocker at eitherthe down stroke only or at the up stroke only "of each key; and meansfor determining whether the rocker shall be moved at the down stroke orat the np stroke of the keys.

24. In a typewriting machine, the combination of a double escapementrack; a single dog cooperative therewith; printing keys; and meansintermediate said printing keys and said single dog and controlled bysaid printing keys for effecting back and forth transverse movements ofsaid dog, said means including means by which a complete operation of aprinting key is operative to effect a transverse movement of the dog inbut one direction.

25. In a typewriting machine, the combination of a double escapementrack; a single dog coperative therewith; printing keys; means controlledby said printing keys for effecting relative back and forth transversemovements between said dog and said racks, said means including means bywhich a complete operation of a printing key is opera tive to effect arelative transverse movelnent between the dog and racks in but onedirection, and means by which the kev controlled means may be renderedefectivo either at the down stroke or at the up stroke of a key toeifect such relative movement.

QG. In a typewriting machine, the combination of a power drivencarriage; two escapement wheels; a single feed dog cooperativetherewith; a dog rocker which is free to be moved back and forth and toremain in either of the back and forth positions to which it may bemoved; printing keys; and means intermediate said printing keys and dogrocker for moving the latter in but one of said back and forthdirections at each complete operation of a key.

27. In a typewriting machine, the combination of a power drivencarriage; two escapement wheels; a single feed dog coperative therewith;a dog rocker which is free to be moved back and forth and to remain ineither of the back and forth positions to which it may be moved;printing keys; means intermediate said printing keys and dog rocker formoving the latter in but one of said back and forth directions at eachcomplete operation of a key; and means by which the relation of theparts 'of said intermediate means ma be changed to move the dog rockerat either the up stroke or at the down stroke of a key.

28. In a typewritiiig machine, the combination of a power drivencarriage; tvvo eseapement Wheels which are fixed to turn together andwhich afford a full letter space movement of the carriage at eachmovement of the Wheels from one tooth on one wheei to the neXt tooth onthe other wheel; a single dog which coperates With said escapementwheels; a dog rocker which earries said dog and by which it is movedback and forth transversely through said Wheels, said rocker being freeto remain in either of the back and forth positions to which it may bemoved; printing keys; and means controlled thereby for moving the rockerback and forth and for moving it to but one of said back and forthpositions at each complete operation of a printing key.

29. In a typewriting machine; the combination of a power drivencarriage; tvvo escapeinent Wheels which are fixed to turn together andwhich afford a full letter space movement of the carriage at eachmovement of the Wheels from one tooth on one Wheel to the next tooth onthe other wheel; a single dog which coperates with said escapementWheels; a dog rocker which carries said dog and by Which it is movedback and forth transversely through said Wheels, said rocker being freeto remain in either of the back and forth positions to which it may bemoved; printing keys; and means controlled thereby for moving the rockerback and forth and for moving it to but one of said back and forthpositions at each complete operation of a printing key, said movingmeans including a member which may be set at will to determine Whetherthe dog rocker shall be rocked at the doivn stroke or at the up strokeof a ke :50. In a typewriting machine, the combination of a power drivencarriage; escapement mechanism comprising coperative eseapement membersone movable back and forth transversely of the other; finger keys; meanscontrolled by said finger keys for moving said movable member back orforth at each complete operation of a key, such complete operation beingoperative through said means to move the escapement member in onedirection and being inoperative to move it in the opposite directon; andmeans by which said key controlled means may be rendered effective tomove said transversely movable escapement member either at the downstroke or at the up stroke of a key.

31. In a typevvriting machine, the combination of a power drivencarriage, escapement mechanism comprising ccperative escapement membersone movable back and forth transversely of the other; finger keys; andmeans controlled by said finger keys for moving said movable member backor forth at each complete operation of a key, said key controlled meansincluding means which may move independently of the movable eseapemeiitmember at either the down stroke or at the up stroke of a key, and meansfor determining Whether the said independent movement shall take placeat the down stroke or at the up stroke of a key.

`Iii a typevvriting machine, the combination of a power driven carriage;vtWo eseapement Wheels therefor, said Wheels being connected to turntogether; a dog rocker; a single dog carried by said dog rocker andaffording a full letter space movement of the carriage at each back orforth movement of the dog rocker; finger keys; means controlled by saidfinger keys for moving said dog rocker, said means including means byWhich the dog rocker is moved in one direction only at each completeoperation of a key; and means for determining Whether the dog rockershall be moved at the down stroke or at the up stroke of a key.

33. In a typewriting machine, the ombination of a power driven carriage;cooperating escapement members therefor, one of said escapement membersboing movable back and forth relatively to the other; finger keys; meansintermediate said finger keys and the said movable escapement member tocontrol its back and forth movements, said means comprising two paivlswhich operate alternately at successive key operations to move saidmovable escapement member back and forth, and means for determiningwhether said pawls shall operate to move the movable escapement memberon the up stroke or on the down stroke of each key.

34. In a typewriting machine, the conibiiiaton of a power drivencarriage; cooperating escapement members therefor,.one of saidescapement members being movable back and forth relatively to the other;finger keys; and means intermediate said finger keys and the saidmovable escapement member to control its back and forth movements, saidmeans comprising an oscillating mentber, and pawls operative alternatelyat successive key operations to move said escapement member back andforth, one of said pawls being effective at one key operation and theother pawl being effective at the next key operation, said intermediatemeans also comprising a member adapted to be connected to saidoscillating member at one side or the other of the pivotal center theresof to determine Whether the said pawls shall be effective at the dovvnstroke or at the up stroke of each key.

35. In a typewriting machine, the combination of a power drivencarriage; cooperating escapeinent members therefor, one of saidescapenient members being movable back and forth relatively to theother; finger keys; and means intermediate said finger keys and the saidmovable escaiiienient meinber to control its back and forth movements,said means comprising a` key controlled leier, paivls carried by saidlever, means for rendering said paivls operative to move said movableescapeinent member back and forth at successive key operations, each keyoperation moving said movable escapenient niember in but one direction,and an actuating device adapted to be connected to said lever at oneside or the other of the pivot thereof.

36. In a typewriting machine, the combination of a carriage; coperatingescapeiiient members; a rocker for one of said members; finger keys; andintermediate controlling means between said finger keys and rocker formoving the latter back and forth, said intermediate means comprisingpawls that are operative alternately on the rocker at successive keyoperations to move it back and forth, and means for determining Whethersaid paivls shall be operative on the rocker at the up stroke or at thedown l nately engage said engaging member at the stroke of each key.

3T. In a typewriting machine, the combination of a power drivencarriage; cooperating escapement members therefor, one of saidescapeinent members being movable back and forth relatively to theother; finger keys; and means intermediate said finger keys and the saidmovable escapement inember to control its back and forth movements, saidmeans comprising a lever of the first order, pawls carried by said leveron opposite sides of the fulcrnm thereof' and operative alternately atsuccessive key operations, an actuating link, and means for connectingsaid link with said lever at one side or the other of the pivot thereof.

38. In a` typevvriting machine, the combination of a carriage;cooperating escapement members; a rocker for one of said members; fingerkeys; and intermediate controlling means between said finger keys androcker for moving the latter back and forth, said intermediate meanscomprising a lever of the first order controlled by said finger keys,pawls carried by said lever at opposite sides of its fulcriim, meansconnected With. said rocker and which is engaged by each of said pawlsin its movement in biit one direction. an actuating lilik, and means forconnecting said link to said lever at one side or the other of the pivotthereof and thus determine Whether the paivls shall be connected withand actnate the rocker at the down stroke or at the np stroke of eachkey.

39. In a typeivriting machine, the combination of a power drivencarriage; escapement mechanism therefor; finger keys; and actuatingdconnections between said finger keys and escapement mechanism, saidconnections comprising an engaging member, tivo pavvls, means foralternately engaging said paivls with said engaging member at successivekey operations, means for preventing the engagement of one paivl withsaid engaging member when the other pawl is in engagement therewith, andmeans for determining Whether said paivls shall alterdown stroke or atthe up stroke of each key. Signed at the borough of Manhattan, city ofNew York, in the county of New York, and State of New York, this 9th(lay of Nov. A. I). 1910.

CHARLES H. SHEPARD.

Witnesses:

M. F. HANNWEBER, CHARLES E. SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

